Igniting device.



W. SLANDREWS & T. VAN ALLER.

IGNITING DEVICE.

APPLICATION FILED APR. 4, 1910.

985,098. Pzitented Feb. 21, 1911.

1 mvenCors. i 8 s Q wmiqm aAndrews.

% Tycho Van/War.

M b M I STATES PATENT omen WILLIAM- s. ANDREWS 'AND 'I'YCHIO vAN' ALLER, or scnnnncmny, new YonK.

Ieni'rrne DEVICE.

:985,098.- i Specification of letterslatnt. Patented Feb. 21, 1911,

v Application filed. April 4, 1910, Serial No. 553,353. 4

'fl'o, all whom it may concern: indicated in the dotted lines in Fig. lxxso I 'Be' it known that we, WILLIAM '8. AN- that-as the trigger is drawn back, the fin er onnws and TYcno ,VAN ALLnR, citizens of must be of necessity slid over the top walk the United States, residing at Schenectady, of the slot,.and thus release the trigger, A fi'county of Selieneetady,*State of New York, helical spring'surronnds the hammer rod,

have invented new and useful Improvements bearing against the ear '6 and the trigger.

1 infI gnitingDevices, ofwhich the follow- The steel strip is bent at'an angle at 9,

i in is a specification; and a small block of the pyrophoric alloy v f his invention relates to a device for ig- 10 is fastened by a screw-as shown, against 10 nit/in gas or other vapor jets, the object a stop 11 formed on the strip. thus simply being to provide an easily manageable in-- and cheaply anchoring the piece of-alloy I strurnent for producing sparks to effect igcurely against displacement. The short'slot nition', and to dispense with the use of in thesloping part 9 permits the 'bloek of matches commonly employed for this'- puralloy to be turned whenscrew is eased sons 15 pose, I I g to present a new surface and compensate for v In carrying out the invention we use a wear on the alloy. The hammer rod "is yrplphoric alloy of iron and cerium or other swaged or turned to a small cross section at 1g y oxidizable 'metal. This alloy is of the striking end, forming a neck to permit low, emits a shower'of brilliant hot sparksl. angle, as shown in Fig. 1. The hammer is In a prior application No. 539,375 filed shod with a cupped washer of high carbon January 21st, 1910, we described a device of sheet steel 12 turning easily on a fsupportthe same general character, but the present ing washer 13-the hollowstein-of which is device is of improved, simplified and cheapslightly longer than the thickness of cupped '80 25 ened construction, and it involves morewasher, as shown clearly in Fig. 2, and nut over structural features, the novelty of 14 looks the parts securely against a shoulwhich will be hereinafter fully described der' on the rod and yet permits the cupped .and will be definitely indicated in the apwasher to turn with freedom. This strucpended claims. ture is of great practical advantage. The 80 In the accompanying drawing, which hammer being a cupped steel disk can be illustrates the invention': Figure 1 is a side sharpened easily and quickly by pressing it elevation artly in section representing the against a. stone or iece of emery cloth and device-fulfsize, Fig. 2 is an enlarged view shifting it to and r0 a few times,'an operin section showing the instrument in the act alion which requires no skill whatever and so 86 of striking sparks, and Fig. 3 a view always provides a true and sharp scraping showing the posit-ion of the parts after they edge. The disk being moreover loosely Tha't'rb been operated and have come to rest. mounted. can easily turn' onuits axis and In constructing the device we takea strip shifts slightly in position each time it ,is of-sheet metal, preferably sheet steel, and actuated, to repeatedly present a sharp edgc 40 bend it on itself to form a support for the until the entire rim becomes dulled. \Vhen o crating parts and the handle. By suitrenewal is necessary the disk may be readily a le punching tools, the strip before bendremoved and sharpened as above directed. ing perforated at the points 1-2 and 3 It is of great practical importance in orl with round holes, at 4" with a short slot, der to make the device reliable, that -a 1 45 and-at 5 with a long slot. The-ear 6 in. proper striking angle be maintained -be-' l which one of the round holes is made is tween the hammer and the alloy, This we struck from its metal, and bent at right 'secure as follows ;-.The block of alloy is A angles as shown'. Thestrip is then bent as held at an an le and the hammer lUd lS bent shown in Fig. 1. Thebend at 7 forms of at an angle a so sothat the butting'edge of '60 the two end'sa handle by which the device the disk hammer moves across the face of may be grasped, the holes .23 form guides the, 'blockat a scraping angle as clearly for the hammer red, the slot5 forms by its shown, in Fig. 2. In this way the cutting 7 side walls a guide forthe trigger that is edge cannot diginto the alloy and damage great, strength and when struck a sharp the end of the rod to be neatly bent atan 75 i fastened to thehaml'ner rod by a rivet. The its surface, but merely scrapes across its 11d 55' sloping wall of the slotted part forms 'a face under the elasticf'pressure ofthe sup- ?glude for the finger Qf"the operator, as porting strip which carries the alloy.

proper relation permitsa small iece. of thealloy of about the size indicated in thedrawing to have a long life, capable of beingangle at 16, so that the screw 15 fitting. .into a threaded hole 1 may be easedor used many thousands times during a long period of service. Adjustmentis provided to regulate the pressure on the hammer when striking. .We secure" this very; simply by bending the members of the strip at a'slight tightened just enough to provide the best working pressure.

It will thus be seen that with a very few.

parts we have provided an instrument'of hardy construction and reliable action.

- In assembling the parts, a block of alloy is fastened by its screw to the spring end. The rod is slipped-i'ntoits forward guide,

and thehelical spring slid upop it. The

' the nut :a-pplied.

stop. is in line with the end wall of. the.

rod is then pushed forward and the rod with spring pressed between the guides. The disk hammer and its supporting bushing are then slipped on the hammer rod and The hole 2 inthe rear handle, as shown and. thus this wall forms a= limit t'othe thrust ofthe rod. f

Willi-be noted that when as .lifwnin Fig. 3, the. bushing for us a sup- 1ts {proper opcratingl relation at all times. .Having thus described our invention what 've claim as new ia nd desire to secure by strip" a spring actu'a Letters Patent is a 1. A pvrophoric i 'mting devlce having ah andle-and carrier of'rmed of a bent metal ted striking member moving in guides formed in the body of the strip and a block of pyrophoric alloy adapt- 'ed'to be struck by the hammer.

I 2. A pyrophoric igniting device-formed of a strip of sheet metaldoubled to form a handle and provided with.holes to form guides, a hammer rod guided by the holes,- a spring seated between the two members of the, handle and a blockzof pyrophoric alloyin operating relation to'the hammerrod.

- 3. A pyrophoric igniting device having a strip of sheet} metal forming a handle,and'

pit for the alloy, and' hold's theh miner in' yielding support for; the alioy, the two parts of the handle meeting on a slope and an adjusting screw atthe. point of sloping engagement' and a block, of pyrophoric alloy and a hammer to engage the same both mounted in the strip. I

4. A pyrophoric igniting device formed of'a bent stri of sheet metal, a block of 'pyrophoric a1 0y mounted on one arm of the strip,-a hammerrod, guided in the strip, a spring for the hammer "rod, and a scraper ontlie rod engaging the alloy at a scraping strip having holes .to afford av sliding guide ,for the hammer, and'an operating spring, theentire range of'niovement of the operating parts {being' practically within the walls of-the'dev-ice.

I 7. A. pyrophoric 'gniting device formed of a bent strip of sheet metal. a bent lip at one end to -seat ablockof alloy, punched guides in the strip, a spring, a hammer rod,-

-and a steel scraper on the hammer rod engaging the alloy elastically at a scraping .angle. b 7 f 8. A pyropliorie igniting device formed of a bentstrip of shcet'metal, a block of alloy mounted at the. end and a screw to 5; A pyrophoric igniting device formed secure the alloy, the screw projecting through a slot in the support to. permit the turning of the block without removing the screw In testimony whereof we have hereunto subscribed our names to the specification in the presence oftwo subscribing witnesses.

Schenectady, N. Y., March 30, 1910.

WILLIAM S. ANDREWS. TYCHQ VAN ALLER. Witnesses: v

' BENJAMINB. HULL,

Mancnnn'r E. WooLLeY. 

